Haibane Renmei

Watched Haibane Renmei. It's a masterpiece that deals with the cycles of reincarnation and enlightenment.

A really good one:

Communicator: "To recognize one's own sin is to have no sin. So, are you a sinner?"

Rakka: "Uh! But if I think I have no sin, then I become a sinner!"

Communicator: "Perhaps this is what it means to be bound by sin. To spin in the same circle, looking for where the sin lies, and at some point losing sight of the way out."